of flint



June 24, 1930. D. P. MOLONY 1,756,794

AUTOMATIC CHARGE HEATING CONTROL FOR INTERNAL COMBUSTION ENGINES Filed Dec. 1, 1924 I FATLQLZ fiPA/azamg Patented June 24, 1930 unit's-so STATE-S PATENT onnn h m i r idee Wi h-e ll- 9 51 91? PANY, QFIQFLINT; MI EIGAN, A QORPO ATIOn OF-INDLANA 1 A'o'romA'rIc CHARGE-HEATING CONTROL lion INTERNAL-COMBUSTION memes I Applicstion filed neat-her 1, 1924. Serial m 753,175.

This invention relates to anautomatic charge heating control for internal combus.

tion engines, the object being to provide means actuated by thev oil pressure'in thef lubricating systemoit an internaljcombustion engine controlling the, a plication of the heating medium employe for heating the charge inits passage to the internal combus-' tionengine.

' ;Another ob]ect of my invention is top'rovide' acontrol which will allow the full vol-- ume of heating medium to pass tothe heater when the oil in the lubricating system is cold, so that the full amount of'heat ivill'beapplied for warming up the-internal combustion engine. 7 a

Another object of myinvention is to provide a control which is exceedinglysimple and cheap in construction and one which can be readilyzapplied to any of the well-known types of internal combustion engines now in 1 use.

Other. and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims. In the drawings, a 1 c Figure 1 is a side elevation,. partly insection, showing theap li'c'ation" of, my im' proved construction 0 control; v v

Figure 2is a detail section through the valve controlling the passage of. oil in the pressure chamber; and] v Figure 8 is" a side.elevation-showing a slightly modified form of heating c-ham fer.-

In the embodiment .ofmy invention shown in Figure 1, 1 indicatesan internal combustion engine, 2 an exhaust manifold; having an exhaust pipe 3. connected thereto and 4: the intake manifold tower-t ns connected a carbureter' or oharge forniing" device. 5,-- the above description being glyen, so that V the operation of my improved construct-ion of automatic control can be readilyjunderw .The riser' of the intake manifold is .surrounded by a heating chamber 6,.whicli is connected to .an' outlet nipple '7 oftl e-ex haust manifold 2 by a pipe 8. 2 The heatinf to which is connected a pipe 1 0 extending back into the exhaustlil'le 3; This pipe can be dispensed withiand the exhaust gases allowed to escape to the. atmosphere. Ar-

ranged within the outlet nipple 7 of the exhaust manifold 2 is a valve. 1'1,fth stem of which is rovided with'an arm.12 havin aseriesof ioles in one-of which,'is'-adapte to be arran ed the hooked end of a rod 13.

The ex aust line pipe 3 isjprovided with a valve 14-,- the stemlof which carries anarm 15 havinga series of holes in which thehooked endofa rod 16=is adapted to be placed.

Arranged in a suitable position on the outside. of the internal combustionvengine an oil pressure cylinder 17 which is provided with a piston 18 normally held in raised-- positioniby coil spr' g 19, said piston havin piston rods 20 and 21 connectedthereto an extending out through the oppositeends of the pressure chamber, said piston yrod's being connected respectively to the links 13.jan'c'l- 1 6 whereby the movementfof. the pistons will control the position of the valves 11 and 14 so as to control thejpassage. of the exhaust gases to the heating chamber 6. i

The movements of the-valves 11 and l4 are'arreste'd by suitably dis osed stops and by the adjustable connection through the rods or li nks l3 and 16 and' t-hearms 12 and 15, the position o f'the valvescanbe adjusted for .theirclo'sing and opening movements for v Winter or summer. setting.

'The' pressure -chamber'is provided with an inlet nipple 22 to. whichisconnected a pipe 23"e'xtending froma valve easing 24 which is provided 'with inlet 25- in. communication with the oil line system 26 -101 the internal combustion ,ehgine. In the. drawing-I, have shown the oil line system connected directly to a; pump 27, but it is, pf jbbjurse understood thatin the application 'ofmyinvention'to an internal combustion engine, the valve'oas'ing ZQwill be connected injanyisuitable manner to any ofthe oil lines of the forced feed lub ieating systemi l j I v The pipe 23' is connecte d to the outlet; n'ipple'24 of theyalve casing 24 and. mova bly mounted inthe'. to velf-the valvejcasingjs a piston 28 normally lieldin p'ositiOiL-ShOWD by a coil spring 29, said piston carrying a piston rod 30 which is pivotally connected to a sleeve valve 31 which is adapted to move up and down in the valve casing and close the outlet nipple 24 so as to completely cut off the flow of oil to the pressure chamber.

When the motor is started and the oil is thick, the pressure is greater at low speed so that the oil overcomes the resistance of the spring 29 working against the piston 28 and raises the sleeve valve so as to prevent the flow of oil .to the pressure chamber so as to provide a warm-up device.

As the spring 19 of the pressure chamber normally holds the valves inposition shown in'Figure 1, the entire volume of exhaust gases from the engine passes through the heating chamber 6 so as to heat the charge produced by the charge forming device in its passage to the internal combustion engine. As

the speed of the motorincreases, the pressure in the oil line of the lubricating system increases and overcomes the resistance of the spring 19 against the piston 18 and the piston 18 moves downwardly so as to close the valve 11 and open the valve 14: which allows the exhaust gases to pass in their normal path of travel out of the exhaust lino pipe to the mufller.

By the adjustment of the rods 13 and 16, the movement of the valves can be regulated so that they Will allow any portion of the entire volume of exhaust gases to be forced out of their natural path of travel through the heating chamber.

The pressure chamber is provided with an outlet pipe 32 leading to the oil sump of the motor so that any leakage of oil past the piston 18 will return to the lubricating system of the internal combustion engine.

In the construction of. valve and warmingup device as shown in Figure 2, as the motor warms up and the oil thins up, the pressure gradually lowers to such a point that the spring 29 forces the piston downwardly so as to overcome the resistance of the pressure, which opens the outlet 24 so that the pressure chamber is in communication with the oil line of the lubricating system.

As the speed of the motor increases, the pressure in the lubricating system increases so that at high speed, the heat-is entirely cut oil from the heating chamber and as the pressure rises and lowers, the valves are movedto opeu' and closed position to automatically control the application of-heat to the charge. s

The valve arrangement takescare ofthe viscosity of the oil in the lubricating system so'that in cold weather, the heatis applied irrespective of the speed and as theoil thins out, the valve is opened so as to allow the pres sure ofthe lubricatingsystem to acton the pressure chamber and automatically control the valve.

In the embodiment shown in Figure 3, the construction of all the parts are identical with those disclosed in the preferred form with the exception that the carburetor A is provided with a heating chamber B in communication with the exhaust so that the mixing chamber of the carbureter will be heated so that the charge in its passage to the engine will be heated and it is thought that the description of the preferred embodiment is suf- -ficient for the embodiment shown in Figure 3.

In the operation of applicants device when the-engine is cold, the oil congeals in pipe 23 and becomes very stiff and when the motor is first started, the resistance ofiered "by this oil is greater than thetens'ion of the spring 29 and the valve is moved into closed position so as to cut-off the pressure chamber and'the valve remains closed'until the lubricant has become heated in the-pipe line 23 and in .the chamber 17, at which time the spring 29 forces the piston back into its normal position so that the pressure chamber is brought into communication with the lubricating system and the device'operates so as to control the application of heat to the heating chamber. This provides a warming up device which only operates when the oil is very stiff 0r congealed.

From the foregoing description it will be seen that I have provided an automatic charge heating control which is operated by the pressure of the oil in the lubricating systen of the internal combustion engine whereby the application of heat to the charge in its passage to the internal combustion engine is controlled through the pressure of the lubrieating system in which a pressure chamber is a in communication \vith'the'lubrieating system so that as the speed of the motor increases and the oil pressure increases, the application of heat is diminished.

What I claim is:' 1. The combination with an internal combustion engine having a forcedv feed lubricating system, of a heating chamber for heatin the charge delivered to said; engine, a va .ve for controlling the admission of heating fluid to saidfheater and means'for actuating said valve controlledby the ressure existing in said forced feed lubricating systern.

. 2. The combination with'an internal combustion engine having a 'forcedifeed lubricating system, of a heater arranged to heat the charge in its passage fromthe charge forming devicetotheengine,- a. pressure chamber in communication with said forced trolling the application of heat to said heating means.

3,1 The combination with combus'tion engine having a forced feed lubrieating system, of a heater for heating the charge in its passe-gate the engine, said heater being in communication-with the cx haust, valves for controlling the admission of heating medium to said heater and means connected to said valves actuated by tl1e-pres sure existing in said forced feed lubricating system. v

4. An internal combustion engine having a forced feed lubricating system, means for heating thecharge delivered .to said engine, a pressure chamber in communication with. said forced feed lubricating systen1,.a pres.- sure operated valve for controlling the'admission of lubricant to said pressure cha1n-' her and means movably mountedin' said pressure chamber for controlling the admission-of heatingmedium to said heater.

5. An internal combustionengine having a forced feed lubricating system, a heating chamber arranged to. heat the charge in its passage from the charge forming device to. the engine, said heater being in communication, with the exhaust ofsaid engine, a valve in the exhau'stpipe for diverting the-exhaust gases through said heater and means actuated by the 'oil pressure in said lubricating system for actuating said valve,

6. An internal combustion engine having a forced feed lubricating system, meansjfor heating the. explosive charge in its passage to the engine, means fordelive'ring a heating medium to said heating means, a valve for controlling the passage of heating medium to said heating means, a pressure chamber in communication, with the. lubricating systom, an'rautomatic' valve arranged to control the admission of lubricant under pressure to said pressure chamber andj a piston-movhavin a connection with said valve said pressure chamber being in communication with thelubricating system and a pressure valve arranged to eontrol-Jthe'admissionof lubricant to. said pressure chamber,

'10. Ail-internal combustion engine having a forced feed 1 lubricating system,-- a heating chamber .arrang'edto heat the charge in its passage to-the eng ne saidiheating-chamberbeing incommunlcation with. the ex'haust line of said engine-,=. -a valve in the exhaust line, a valve in ftherintaketo -said --heat-ing said heating chamber, a; ressure. chamber, a r

chamber, apressurechamberhav-ing a spring actuated plunger connected te -said valve,

said pressure chamber being in communica 'tion wi th the forced feed lubricating -System and adapted to be actuated by the pressure therein for controlling-tilesposition of said valves.

v In testimony v hereof Ihe g i i my Signature. 5

DO ALD P honour.

ably mounted in said pressure chamber hav- I ing a connection with'the-valve' for con'trolling the admission of heatingmediurn to said heater. v I

7. An internal combustionengine having a forced feed lubricating system,-means for heating the charge delivered as said engine and means for controlling. the application of heating medium to'said heater actuated by the pressure existing in said forced iced, 7:.

lubricating system.

8. An internal combustionengine having a forcc'd feed lubricating system means for heating the explosive. chargein its passage,

to the engineymeans for controlling the admission of heatingmedium'to said beaten-apressure cylinder. hav ng a movable p ston connected tosaid .controllingmeans, ajpipe' actuated valve disposed to control the. pas sage of lubricantto said pressure chamber. 9. .An internal; combustion engine having a forced feed lubricating system, aheating chamberv arranged to heat the explosive charge in its passage to the enginefinfcom-- connecting said pressure? chamber "to. the forced'feedzlubr catmg system and a pressure 

